Solar battery



FIG. 1 is a top, front and left end perspective view of a solar battery showing my new design;

FIG. 2 is a bottom, front and right end perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left end elevational view thereof;

FIG. 7 is a right end elevational view thereof. 

The ornamental design for a solar battery, as shown and described. 